Ryou Fujita

According to our database, Ryou Fujita authored at least 12 papers between 2004 and 2013.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2013

Privacy Preserving Data Processing with Collaboration of Homomorphic Cryptosystems.

Shigeo Tsujii, Hiroshi Doi, Ryou Fujita, Masahito Gotaishi, Yukiyasu Tsunoo, Takahiko Syouji

Proceedings of the Financial Cryptography and Data Security, 2013

2012

Construction of the Tsujii-Shamir-Kasahara (TSK) Type Multivariate Public Key Cryptosystem, which relies on the Difficulty of Prime Factorization.

Shigeo Tsujii, Kohtaro Tadaki, Masahito Gotaishi, Ryou Fujita

IACR Cryptol. ePrint Arch., 2012

Scheme overcoming incompatibility of privacy and utilization of personal data.

Shigeo Tsujii, Kohtaro Tadaki, Ryou Fujita, Hiroshi Yamaguchi, Masahito Gotaishi, Yukiyasu Tsunoo, Takahiko Syouji, Norihisa Doi

Proceedings of the International Symposium on Information Theory and its Applications, 2012

2010

Dually-Perturbed Matsumoto-Imai Signature (DPMS) Scheme.

Masahito Gotaishi, Kohtaro Tadaki, Ryou Fujita, Shigeo Tsujii

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2010

Proposal of a Signature Scheme based on STS Trapdoor.

Shigeo Tsujii, Masahito Gotaishi, Kohtaro Tadaki, Ryou Fujita

IACR Cryptol. ePrint Arch., 2010

2009

Security Enhancement of Various MPKCs by 2-Layer Nonlinear Piece in Hand Method.

Shigeo Tsujii, Kohtaro Tadaki, Ryou Fujita, Masahito Gotaishi, Toshinobu Kaneko

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009

Proposal of PPS Multivariate Public Key Cryptosystems.

Shigeo Tsujii, Kohtaro Tadaki, Masahito Gotaishi, Ryou Fujita, Masao Kasahara

IACR Cryptol. ePrint Arch., 2009

2008

Nonlinear Piece In Hand Matrix Method for Enhancing Security of Multivariate Public Key Cryptosystems.

Shigeo Tsujii, Kohtaro Tadaki, Ryou Fujita

IACR Cryptol. ePrint Arch., 2008

Nonlinear Piece In Hand Perturbation Vector Method for Enhancing Security of Multivariate Public Key Cryptosystems.

Ryou Fujita, Kohtaro Tadaki, Shigeo Tsujii

IACR Cryptol. ePrint Arch., 2008

2007

Proposal for Piece in Hand Matrix: General Concept for Enhancing Security of Multivariate Public Key Cryptosystems.

Shigeo Tsujii, Kohtaro Tadaki, Ryou Fujita

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007

2006

Proposal for Piece In Hand Matrix Ver.2: General Concept for Enhancing Security of Multivariate Public Key Cryptosystems.

Shigeo Tsujii, Kohtaro Tadaki, Ryou Fujita

IACR Cryptol. ePrint Arch., 2006

2004

Piece In Hand Concept for Enhancing the Security of Multivariate Type Public Key Cryptosystems: Public Key Without Containing All the Information of Secret Key.

Shigeo Tsujii, Kohtaro Tadaki, Ryou Fujita

IACR Cryptol. ePrint Arch., 2004